<template>
	<view class="search-box">
		<uni-search-bar
		@input="input" cancelButton="none"></uni-search-bar>
		<view class="sugg-list" v-if="searchResults.length !== 0">
			<view class="sug-item" v-for="(item,i) in searchResults" 
			:key="i"
			@click="gotoDetail(item.goods_id)"
			>
				<view class="good-name">{{item.goods_name}}</view>
				<uni-icons type="arrowright" size="16"></uni-icons>
			</view>
		</view>
		<view class="history-box" v-else>
			<view class="history-title">
				<text>搜索历史</text>
				<uni-icons type="trash" size="17" @click="cleanHistrory"></uni-icons>
			</view>
			<view class="history-list">
				<uni-tag 
				:text="item"
				 v-for="(item,i) in historys" 
				 :key="i"
				 @click="gotoGoodsList(item)"
				 ></uni-tag>
			</view>
		</view>
	</view>
</template>

<script>
	export default {
		data() {
			return {
				timer:null,
				kw:'',
				searchResults:[],
				historyList:['a','apple','app'],
			};
		},
		computed:{
			historys(){
				return [...this.historyList].reverse()
			}
		},
		methods:{
			input(e){
				clearTimeout(this.timer);
				this.timer=setTimeout(()=>{
					this.kw=e;
					this.getSearchList()
				},500)
			},
			async getSearchList(){
				const {data:res}=await uni.$http.get('/api/public/v1/goods/qsearch', { query: this.kw });
				if(res.meta.status!==200){
					this.searchResults=[];
					return uni.$showMsg();
				}else{
					this.searchResults=res.message;
					this.saveSearchHistory();
				}
			},
			gotoDetail(goods_id){
				uni.navigateTo({
					url:"../goods_detail/goods_detail?goods_id="+goods_id
				})
			},
			saveSearchHistory(){
				const set=new Set(this.historyList);
				set.delete(this.kw);
				set.add(this.kw);
				this.historyList=Array.from(set);
				uni.setStorageSync('kw',JSON.stringify(this.historyList))
			},
			cleanHistrory(){
				this.historyList=[];
				uni.setStorageSync('kw','[]');
			},
			gotoGoodsList(item){
				uni.navigateTo({
					url:"../good_list/good_list?query="+item
				})
			}
		},
		onLoad() {
			this.historyList=JSON.parse(uni.getStorageSync('kw')||'[]')
		}
	}
</script>

<style lang="scss">
.search-box{
	position: sticky;
	top:0;
	z-index:999;
}
.sugg-list {
  padding: 0 5px;

  .sugg-item {
    font-size: 12px;
    padding: 13px 0;
    border-bottom: 1px solid #efefef;
    display: flex;
    align-items: center;
    justify-content: space-between;

    .goods-name {
      // 文字不允许换行（单行文本）
      white-space: nowrap;
      // 溢出部分隐藏
      overflow: hidden;
      // 文本溢出后，使用 ... 代替
      text-overflow: ellipsis;
      margin-right: 3px;
    }
  }
}
.history-box {
  padding: 0 5px;

  .history-title {
    display: flex;
    justify-content: space-between;
    align-items: center;
    height: 40px;
    font-size: 13px;
    border-bottom: 1px solid #efefef;
  }

  .history-list {
    display: flex;
    flex-wrap: wrap;

    .uni-tag {
      margin-top: 5px;
      margin-right: 5px;
    }
  }
}
</style>
